Nonlinear optical parameters for InSb at 10.6 and 9.6 μm with microsecond pulses

A. E. Smith; R. G. McDuff; N. R. Heckenberg

doi:10.1364/JOSAB.12.000393

Journal of the Optical Society of America B
Vol. 12,
Issue 3,
pp. 393-400
(1995)
•https://doi.org/10.1364/JOSAB.12.000393

Nonlinear optical parameters for InSb at 10.6 and 9.6 μm with microsecond pulses

A. E. Smith, R. G. McDuff, and N. R. Heckenberg

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A. E. Smith, R. G. McDuff, and N. R. Heckenberg, "Nonlinear optical parameters for InSb at 10.6 and 9.6 μm with microsecond pulses," J. Opt. Soc. Am. B 12, 393-400 (1995)

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Abstract

Nonlinear optical parameters are found for intrinsic and n-doped indium antimonide by use of a hybrid cw–transversely excited atmosphere CO₂ laser producing microsecond pulses. The Z-scan method is used, with both open and closed apertures. In addition, transverse ring profiles of defocused beams are analyzed. Results are obtained for 10.6- and 9.6-μm radiation and can be used to model the behavior of devices.

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Parameter	10.6 μm	9.6 μm	Units
Band gap	7.0	7.0	μm
l	0.5	0.5	mm
n_i	(1.7 ± 0.3) × 10²²	(1.7 ± 0.3) × 10²²	m⁻³
α₀	1230 ± 50	1100 ± 50	m⁻¹
Refractive index	3.95	3.95	—
R	4	4	%
σ_a	(7.2 ± 0.3) × 10⁻²⁰	(6.5 ± 0.3) × 10⁻²⁰	m²
σ_n	$- ({0.75}_{- 0.08}^{+ 0.17}) \times 10^{- 24}$	$- ({1.44}_{- 0.44}^{+ 0.26}) \times 10^{- 24}$	m³
βτ_i	(4.5 ± 0.9) ×10⁻¹⁵	$({3.4}_{- 0.5}^{+ 2.0}) \times 10^{- 15}$	ms/W
τ_i	40 – 80	40 – 80	ns
γ	−1.7 ×10⁻¹¹	−2.8 × 10⁻¹¹	m²/W
Re[χ⁽³⁾]	−1.0 ×10⁻⁴	−1.6 ×10⁻⁴	esu

Parameter	10.6 μm	Units	Source
Band gap	6.8	μm	FTIR ^adata
ω₀	0.59	mm
l	0.5	mm	Manufacturer’s data + Measurement
Carrier concentration	(2.1 ± 0.1) ×10²³	m⁻³	Manufacturer’s data
α₀	1144 ± 50	m⁻¹	cw transmission
Refractive index	3.95	—	Ref. 36
R	4	%	FITR^a data
τ_n	0.78 ±0.25	ns	τ_i and Ref. 36
γ_1.8	−(3.4 ± 1.0) × 10⁻²⁰	(m²/W)^1.8
α_1.8	(2.4 ± 1.2) × 10⁻¹⁵	m⁻¹(m²/W)^1.8
γ_T	(7.3 ± 0.6) × 10⁻⁷	m²/J
σ	136.48	J/(K kg)	Ref. 36
ρ	5.775 × 10³	kg/m³	Ref. 36
dn/dT	4.7 × 10⁻⁴	K⁻¹	Ref. 36

Parameter	10.6 μm	9.6 μm	Units
Band gap	7.0	7.0	μm
l	0.5	0.5	mm
n_i	(1.7 ± 0.3) × 10²²	(1.7 ± 0.3) × 10²²	m⁻³
α₀	1230 ± 50	1100 ± 50	m⁻¹
Refractive index	3.95	3.95	—
R	4	4	%
σ_a	(7.2 ± 0.3) × 10⁻²⁰	(6.5 ± 0.3) × 10⁻²⁰	m²
σ_n	$- ({0.75}_{- 0.08}^{+ 0.17}) \times 10^{- 24}$	$- ({1.44}_{- 0.44}^{+ 0.26}) \times 10^{- 24}$	m³
βτ_i	(4.5 ± 0.9) ×10⁻¹⁵	$({3.4}_{- 0.5}^{+ 2.0}) \times 10^{- 15}$	ms/W
τ_i	40 – 80	40 – 80	ns
γ	−1.7 ×10⁻¹¹	−2.8 × 10⁻¹¹	m²/W
Re[χ⁽³⁾]	−1.0 ×10⁻⁴	−1.6 ×10⁻⁴	esu

Parameter	10.6 μm	Units	Source
Band gap	6.8	μm	FTIR ^adata
ω₀	0.59	mm
l	0.5	mm	Manufacturer’s data + Measurement
Carrier concentration	(2.1 ± 0.1) ×10²³	m⁻³	Manufacturer’s data
α₀	1144 ± 50	m⁻¹	cw transmission
Refractive index	3.95	—	Ref. 36
R	4	%	FITR^a data
τ_n	0.78 ±0.25	ns	τ_i and Ref. 36
γ_1.8	−(3.4 ± 1.0) × 10⁻²⁰	(m²/W)^1.8
α_1.8	(2.4 ± 1.2) × 10⁻¹⁵	m⁻¹(m²/W)^1.8
γ_T	(7.3 ± 0.6) × 10⁻⁷	m²/J
σ	136.48	J/(K kg)	Ref. 36
ρ	5.775 × 10³	kg/m³	Ref. 36
dn/dT	4.7 × 10⁻⁴	K⁻¹	Ref. 36

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Equations (20)

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